akismet:author
Add this option to the field that accepts the name of the sender.
Example: [text* your-name akismet:author]
akismet:author_email
Add this option to the field that accepts the email address of the sender.
Example: [email* your-email akismet:author_email]
akismet:author_url
Add this option to the field that accepts the URL of the sender.
Example: [text your-url akismet:author_url]